Malicious Code Detected in trello-enterprises Package: Exfiltration of Sensitive Information

trello-enterprises Updated 17 Mar 2026

Summary

16/03/2026
CRITICAL
No i
Critical
Not published

MAL-2026-1486: Malicious code in trello-enterprises (npm). Affected versions are not published. No fix is published. How to fix ↓

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Background

The trello-enterprises package is an npm module designed for integration with Trello's enterprise features. It allows developers to interact with Trello's API, enabling functionalities such as task management and team collaboration. However, this package has been identified as malicious due to a postinstall script that executes a file, leading to the exfiltration of sensitive information to a remote server.

Vulnerability Detail

The vulnerability stems from a malicious postinstall script within the trello-enterprises package. When installed, this script runs automatically, executing code that collects sensitive data from the user's environment and sends it to an external server. This poses significant risks, including data breaches and unauthorized access to confidential information. The issue is particularly concerning as it exploits the trust users place in npm packages, potentially affecting a wide range of applications that rely on this package.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall trello-enterprises

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

Workaround

As a temporary workaround, you can prevent the execution of postinstall scripts by using the following command when installing packages: 'npm install --ignore-scripts'. However, this may not be a long-term solution as it could affect the functionality of other packages that rely on postinstall scripts.

Conclusion

The trello-enterprises package has been identified as malicious due to a postinstall script that exfiltrates sensitive information. It is essential to uninstall this package immediately and monitor your application for any potential vulnerabilities. Utilizing tools like Vulert can help keep your software secure.

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FAQ

The trello-enterprises package is an npm module that facilitates integration with Trello's enterprise features, allowing developers to manage tasks and collaborate within teams.

The malicious code can exfiltrate sensitive information from your environment, leading to potential data breaches and unauthorized access to confidential data.

You should immediately uninstall the package using 'npm uninstall trello-enterprises' and check for any signs of data compromise.

Yes, you can use tools like Vulert, which monitors and alerts you in real-time for open-source vulnerabilities in your software without requiring access to the code or installation.

You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.

How To Fix

This package is malicious. Remove it and rotate any credentials it could have accessed.

npm uninstall trello-enterprises

If it arrived as a transitive dependency, remove the package that pulled it in, then reinstall.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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